数字加工与空间关系的研究进展

数学的产生和发展使数字和空间之问产生了紧密的联系,目前的实验已经表明了数字的大小与空间注意存在自动的联系。数字和空间的自动联系是由生物和文化因素共同作用的结果。通过总结数字和空间的脑成像研究,本文认为角回、顶内沟区域可能在数字和空间相互作用中发挥了重要的作用。     

言语产生中的韵律生成

首先描述了韵律生成的相关模型。然后以研究的问题为着眼点,回顾了言语产生中韵律生成的相关研究。发现大多数研究结果都证明,在单词产生过程中,存在一个独立于音段内容的抽象韵律结构,其中包含了词的重音模式和音节数量等信息;在短语和句子产生过程中,韵律结构和停顿模式都不是完全决定于句法结构,而具有相对的独立性;句子韵律产生的最佳单位是韵律词。语言学韵律产生的脑区激活呈左侧化趋势。     

Curriculum, Critical Common-Sensism, Scholasticism, and the Growth of Democratic Character

My paper concentrates on Peirce’s late essay, “Issues of Pragmaticism,” which identifies “critical common-sensism” and Scotistic realism as the two primary products of pragmaticism. I argue that the doctrines of Peirce’s critical common-sensism provide a host of commendable curricular objectives for democratic Bildung. The second half of my paper explores Peirce’s Scotistic realism. I argue that Peirce eventually returned to Aristotelian intuitions that led him to a more robust realism. I focus on the development of signs from the vague and indeterminate to the determinate and universal. The primary example will be the evolution of the very idea of number. I believe we will never arrive at the end of number history because we can never fully contain creativity. I draw similar conclusions for the idea of curriculum. Whether or not there is an end to the evolution of signs in Peirce is a matter of debate. I incline toward the opinion there is not, though I am unsure. I conclude by arguing that rationality itself is but the form and structure of poetic creation and that we should embrace paradox and even contradiction rather that become caught in totalizing and totalitarian end of history stories.     

探索性因素分析——最近10年的评述

目的：(1)介绍国外心理统计学界对探索性因素分析中几个重大问题的基本观点;(2)系统地评述过去10年里(1991～2000年)我国心理学研究对这一技术的使用情况;(3)强调运用这一技术时值得注意的一些事项,以期这一技术对我国心理学研究发挥更大的作用。方法：作检索了《心理学报》和《心理科学》在1991～2000年间与探索性因素分析有关的章,对其中以探索性因素分析为主要研究方法的重点章(feature article)进行了编码,统计了频数及百分比分布。结果：我国心理学研究在积极使用探索性因素分析这一先进统计技术时还存在一些问题,主要表现在：(1)在确定因素个数时,倾向于机械地依靠桌个单一方法来作决定,(2)大量使用正交旋转,(3)过于依赖SPSS,(4)对因素分析过程中的重要信息／结果报告不够。结论：探索性因素分析在过去十年得到了广泛的应用,如能吸收国外同行的一些观点,探索性因素分析这一技术在我国心理学研究中必将获得更广泛有效的应用。     

Sequential sampling models of human text classification

Text classification involves deciding whether or not a document is about a given topic. It is an important problem in machine learning, because automated text classifiers have enormous potential for application in information retrieval systems. It is also an interesting problem for cognitive science, because it involves real world human decision making with complicated stimuli. This paper develops two models of human text document classification based on random walk and accumulator sequential sampling processes. The models are evaluated using data from an experiment where participants classify text documents presented one word at a time under task instructions that emphasize either speed or accuracy, and rate their confidence in their decisions. Fitting the random walk and accumulator models to these data shows that the accumulator provides a better account of the decisions made, and a “balance of evidence” measure provides the best account of confidence. Both models are also evaluated in the applied information retrieval context, by comparing their performance to established machine learning techniques on the standard Reuters‐21578 corpus. It is found that they are almost as accurate as the benchmarks, and make decisions much more quickly because they only need to examine a small proportion of the words in the document. In addition, the ability of the accumulator model to produce useful confidence measures is shown to have application in prioritizing the results of classification decisions.     

When Problems Lead to Ideas: The Roles of Daily Vigor and Social Interactions

In this study, we investigate idea generation by conducting a diary study. We hypothesized that idea generation depends on problem identification, and that this relation is moderated by two factors: (a) the number of social interactions an individual has with “non‐redundant” network connections, and (b) an individual's level of vigor. The hypotheses were tested by making use of a diary study among 31 employees of a Dutch applied university over a period of 2 weeks. Results showed that idea generation results from the identification of problems that require new ideas to solve them. An individual's number of social interactions and the level of redundancy of these social interactions moderated this relation. The level of vigor of an individual did not predict idea generation, but results suggest that vigor is needed for interacting with others. Furthermore, this study contributes to the creativity research using a new approach to look at the effects of social interactions by relating them to the overall structure of social networks.     

Talking about proportion: Fraction labels impact numerical interference in non‐symbolic proportional reasoning

Across two experiments, we investigated how verbal labels impact the way young children attend to proportional information, well before the introduction of formal fraction education. Five‐ to seven‐year‐old children were introduced to equivalent non‐symbolic proportions labeled in one of three ways: (a) a single, categorical label for multiple fractions (both 3/4 and 6/8 referred to as “blick”), (b) labels that focused on the numerator [e.g., 3/4 labeled as “three blicks” (Experiment 1) or “three‐fourths” (Experiment 2)], or (c) labels that had a complete part‐whole structure (“three‐out‐of‐four”). Children then completed measures of non‐symbolic proportional reasoning that pitted whole‐number information against proportional information for novel proportions. Across both experiments, children who heard the categorical labels were more likely to match non‐symbolic displays based on proportion than children in any of the other conditions, who demonstrated higher levels of numerical interference. These findings suggest that fraction labels have the potential to shape children's attention to proportional information even in the context of non‐symbolic part‐whole displays and for children who are not familiar with formal fraction symbols. We discuss these findings in terms of children's developing understanding of proportional reasoning and its implications for fraction education.     

Infants recognize counting as numerically relevant

Children do not understand the meanings of count words like “two” and “three” until the preschool years. But even before knowing the meanings of these individual words, might they recognize that counting is “about” the dimension of number? Here in five experiments, we asked whether infants already associate counting with quantities. We measured 14‐ and 18‐month olds’ ability to remember different numbers of hidden objects that either were or were not counted by an experimenter before hiding. As in previous research, we found that infants failed to differentiate four hidden objects from two when the objects were not counted—suggesting an upper limit on the number of individual objects they could represent in working memory. However, infants succeeded when the objects were simply counted aloud before hiding. We found that counting also helped infants differentiate four hidden objects from six (a 2:3 ratio), but not three hidden objects from four (a 3:4 ratio), suggesting that counting helped infants represent the arrays’ approximate cardinalities. Hence counting directs infants’ attention to numerical aspects of the world, showing that they recognize counting as numerically relevant years before acquiring the meanings of number words.     

How many fingers am I holding up? The answer depends on children's language background

Monolingual English‐speaking preschool children tend to process number gestures as unanalyzed wholes rather than use the one‐to‐one (finger‐to‐quantity) correspondence. By school age, however, children can use the one‐to‐one correspondence. The purpose of the present studies was to test whether children learn one‐to‐one correspondence through exposure to a variety of finger configurations to convey a single quantity. In Study 1, we compared children with exposure to multiple one‐to‐one configurations, that is, French‐English and German‐English bilingual children, to English monolingual children who see consistent representations. As predicted, the bilingual children performed better in interpreting unconventional number gestures. In Study 2, we compared Chinese‐English bilingual children who knew arbitrary one‐handed Chinese numbers gestures for quantities 6–10 to Chinese‐English bilingual children who did not know these gestures, as well as to monolingual English speakers. Chinese‐English bilinguals who knew the arbitrary gestures were more likely to interpret unconventional gestures arbitrarily (i.e., influenced by the written and/or Chinese gesture forms). These children did not differ from English monolinguals in the interpretation of unconventional gestures. These results are consistent with the argument that children can become sensitive to the one‐to‐one correspondence in number gestures with exposure to multiple configurations for the same quantity.